如何绘制透明的渐变色

Question

在我的代码中：

paint.setColor(Color.GRAY);
paint.setAlpha(80);
canvas.drawPath(getPath2(), paint);

public static Path getPath2()
{
    Path mPath2 = new Path();



    mPath2.moveTo(pta2.x, pta2.y);
    mPath2.lineTo(pta.x, pta.y);

    mPath2.lineTo(ptb.x, ptb.y);

     mPath2.quadTo(ptl.x, ptl.y, ptd.x, ptd.y);

    mPath2.close();
    return mPath2;
}

你知道我的油漆画了一个灰色，它不透明，渐变，我不知道我是否应该使用paint.setColorFilter，你能告诉我怎么做

Answer 1

Paint paint = new Paint();
paint.setStyle(Style.FILL);
LinearGradient gradient = new LinearGradient(fromx, fromy, tox, toy, new int[]{color1, color2, color3}, new float[]{0, 0.6f, 1}, TileMode.CLAMP);
paint.setShader(gradient);
canvas.drawPath(getPath2(), paint);